Pyle Andrew(2010).„Atoms and Atomism”.u:Grafton Anthony; Most Glenn W.; Settis Salvatore.The Classical Tradition.Cambridge, Massachusetts and London:The Belknap Press of Harvard University Press.str.103–104.ISBN978-0-674-03572-0.
Ghosh, D.C.; Biswas, R.(2002).„Theoretical calculation of Absolute Radii of Atoms and Ions. Part 1. The Atomic Radii”.Int. J. Mol. Sci.3(11): 87–113.DOI:10.3390/i3020087.
Jacoby Mitch(2006).„As-yet-unsynthesized superheavy atom should form a stable diatomic molecule with fluorine”.Chemical & Engineering News84(10): 19.DOI:10.1021/cen-v084n010.p019a.
uredništvo.„ABC's of Nuclear Science”.Lawrence Berkeley National Laboratory.Arhiviranoiz originalana datum 5. 12. 2006.Pristupljeno 3. 1. 2007.
Matis Howard S..„The Isotopes of Hydrogen”.Nacionalna laboratorija Lawrence Berkeley.Arhiviranoiz originalana datum 18. 12. 2007.Pristupljeno 21. 12. 2007.
Yarris Lynn.„Talking Pictures”.Berkeley Lab Research Review.Arhiviranoiz originalana datum 13. 1. 2008.Pristupljeno 2020-08-22.
Anderson Don L.; Foulger, G.R.; Meibom, Anders.„Helium: Fundamental models”.MantlePlumes.org.Arhiviranoiz originalana datum 8. 2. 2007.Pristupljeno 14. 1. 2007.
Matis Howard S..„The Isotopes of Hydrogen”.Nacionalna laboratorija Lawrence Berkeley.Arhiviranoiz originalana datum 18. 12. 2007.Pristupljeno 21. 12. 2007.
Geološki zavod Kansasa.„Age of the Earth”.Univerzitet Kansasa.Arhiviranoiz originalana datum 2008-07-05.Pristupljeno 2020-08-22.
Anderson Don L.; Foulger, G.R.; Meibom, Anders.„Helium: Fundamental models”.MantlePlumes.org.Arhiviranoiz originalana datum 8. 2. 2007.Pristupljeno 14. 1. 2007.
Padilla Michael J.; Miaoulis, Ioannis; Cyr, Martha(2002).Prentice Hall Science Explorer: Chemical Building Blocks.Upper Saddle River, New Jersey:Prentice-Hall, Inc..str.32.ISBN978-0-13-054091-1.OCLC47925884.